As you work with systems over the years, you can keep stats on this....sort of a sliding scale on each side...

I have concluded that most of the published systems that have a higher winrate illustrate smaller targets with bigger stops. This is a no brainer to understand. MAE and MFE studies reveal the mechanics of this.

When tuning a system I find the best systems to be loosely set up, and to not over optimize too tight.

It is best to use use several systems with high winrates and others with low win rates....when you combine these you might discover correlations that lead you into each system...